In medicine tubo-ovrian (also tuboovarian) refers to a Fallopian tube together with an ovary, and tuboplasty is the surgical repair of one or both Fallopian tubes. Tubocurarine is an alkaloid used to relax voluntary muscles, so named because its precursor, curare, was at one time transported in bamboo tubes in South America. A tubifex worm (Latin -fex from facere, make) is a small worm that lives in fresh water, partly buried in the mud, an example of a tubicolous worm, one living in a tube.